diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-geni-qcom.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c index 5b1dca1fff79..e99a9d57449f 100644 --- a/drivers/spi/spi-geni-qcom.c +++ b/drivers/spi/spi-geni-qcom.c @@ -79,6 +79,7 @@ struct spi_geni_master { unsigned int oversampling; spinlock_t lock; int irq; + bool cs_flag; }; static int get_spi_clk_cfg(unsigned int speed_hz, @@ -146,10 +147,15 @@ static void spi_geni_set_cs(struct spi_device *slv, bool set_flag) struct geni_se *se = &mas->se; unsigned long time_left; - pm_runtime_get_sync(mas->dev); if (!(slv->mode & SPI_CS_HIGH)) set_flag = !set_flag; + if (set_flag == mas->cs_flag) + return; + + mas->cs_flag = set_flag; + + pm_runtime_get_sync(mas->dev); spin_lock_irq(&mas->lock); reinit_completion(&mas->cs_done); if (set_flag) |